Similarity in chemical properties of the atoms of elements in a group of the Periodic table is most closely…
Similarity in chemical properties of the atoms of elements in a group of the Periodic table is most closely related to:
atomic numbers
atomic masses
number of principal energy levels
number of valence electrons
Solution
If elements are arranged in order of their increasing atomic numbers, element coming at intervals of $2,8,8,18,18,32$ and 32 will have similar physical and chemical properties and thus grouped in one particular group.